91226031946 has 12 divisors (see below), whose sum is σ = 159180117138. Its totient is φ = 39096870792.

The previous prime is 91226031943. The next prime is 91226031971. The reversal of 91226031946 is 64913062219.

It can be written as a sum of positive squares in only one way, i.e., 69359016321 + 21867015625 = 263361^2 + 147875^2 .

It is a super-4 number, since 4×91226031946⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (91226031943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 465438841 + ... + 465439036.

Almost surely, 2^91226031946 is an apocalyptic number.

91226031946 is a deficient number, since it is larger than the sum of its proper divisors (67954085192).

91226031946 is a wasteful number, since it uses less digits than its factorization.

91226031946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930877893 (or 930877886 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 91226031946 in words is "ninety-one billion, two hundred twenty-six million, thirty-one thousand, nine hundred forty-six".